An electroencephalogram (EEG) is a test that looks at the function of the brain. The brain works by a series of nerve impulses which cause electrical signals. These signals (also called brainwaves) can be recorded through the scalp. This page from Great O
An electrogastrogram (EGG) is a painless test which measures the electrical activity in the stomach, before, during and after food. This page from Great Ormond Street Hospital (GOSH) explains about the EGG test, what it involves and what to expect when yo
An electrophysiology (EP) study is used to look at the electrical signals making your heart pump blood around the body. The heart muscle sends out an electrical signal every time your heart beats. Usually you won’t feel it, but if you have an abnormal hea
Embolisation is a way of blocking abnormal blood vessels. This page from Great Ormond Street Hospital (GOSH) explains about embolisation, why it might be suggested and what to expect when your child comes to GOSH for treatment.